**Participants try to guess the number that another participant (Number Guru) is thinking of that will be between 1 to 100.**

## Materials

- Paper
- Pencil/pen

## Framing

Can you guess the guru’s number?

## Instructions

- Participants will be in their groups of 3-4.
- One participant will start as the Number Guru. The other 2-3 participants will be trying to guess the number the Number Guru is thinking of between 1 to 100.
- The Number Guru will think of a number and write it down on a piece of paper, but so that none of the other participants can see.
- The other participants will then write down 3 questions for the Number Guru. Each question has to be a yes or no question. They can write all three at once, or one at a time. Examples of
questions are:

- Does it start with a 3?

- Does it end with a 5?

- Is it an odd number?

- Is it higher than 40?

- Is it lower than 30?

- Can it be divided by 5?

- When they write down a question, they will give it to the Number Guru who will write yes or no next to the question.
- When a participant has asked their 3 questions, they begin to guess the Guru’s number. They have 5 guesses.

- They will write “#1” and write their first guess next to it.

- They will give it to the Guru who will put an up arrow (the number is higher than the guess), or a down arrow (the number is lower than the guess).

- Then the participant will write #2 and put their second guess.

- The participant to get it correct on the least amount of guesses wins that round and is the new Number Guru.
- If no participant got it right after 5 guesses, each participant is allowed to ask one more question, and get 5 more guesses.

## Modify

- Allow participants to ask more questions at the start.
- Participants ask their questions out loud.
- Participants will be in two groups and the group to guess the right number first gets a point for their group.
- Number is between 1 and 50.

## Safety

- There are no foreseeable safety concerns for this activity.

## Wrap-up

No wrap-up is necessary for this activity.

*Adapted from: http://activeafterschool.ca/activities/guess-gurus-number*